[Bug tree-optimization/91096] Openmp vector max reduction incorrect

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91096

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46561
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46561&action=edit
gcc10-pr91096.patch

Does this fix it for you?  Works for me with:
make check-gcc RUNTESTFLAGS='--target_board=unix\{-ffast-math,\}
vect.exp=vect-simd*.c'
on x86_64-linux.